The Short-Term Temporal Spectrum of Precipitable Water Vapor

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Science  04 Sep 1981:
Vol. 213, Issue 4512, pp. 1112-1113
DOI: 10.1126/science.213.4512.1112


Short-term power spectra of the fluctuations in the precipitable water vapor measured with a dual-channel microwave radiometer are presented. The spectra, taken over 34-hour sampling periods, encompass periodicities from I day to about 10 minutes. The fluctuation power is associated with the average precipitable water vapor for the sampling period. The background noise spectrum of the radiometric instrument is also discussed.